I now photograph all embossed glass bottles infront of a window in the early afternoon with most light shining though the bottle but light coming from the front and sides as well, I sit them on white paper with paper behind (light comes from just above the field of view). It's better if you can get a photo that's not too dark.
It's not easy to get good bottle photo's, some people seem to have the knack though.
This is one of mine that came out ok, it's a rare little codd too [] .